Articles written by Çagdas Bozman

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Nous sommes fiers d'annoncer la release de la première version majeure de Liquidity, le langage de smart contracts et son outillage. Parmi les fonctions phares : multiples points d'entrée, système de contrats modulaire, polymorphisme et inférence de type, syntaxe ReasonML pour une plus grande ad... (Read more)

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Smart contracts calls already provide a built-in authentication mechanism as transactions (i.e. call operations) are cryptographically signed by the sender of the transaction. This is a guarantee on which programs can rely. However, sometimes you may want more involved or flexible authentication sch... (Read more)

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OCamlPro is pleased to announce the latest update of TZScan (https://tzscan.io), its Tezos block explorer to ease the use of the Tezos network. TzScan is now ready for the protocol update scheduled for tomorrow. In addition to some minor bugfixes, the main novelties are: Displaying of obtained and e... (Read more)

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Update - TZScan.io can now work on top of the zeronet (zeronet.tzscan.io), we hope it can help the developers community monitor the network. You can now switch between the alphanet & zeronet networks! OCamlPro is pleased to announce an update of TzScan (https://tzscan.io), its Tezos block explorer t... (Read more)

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As a tradition, we took part in this year's Journées Francophones des Langages Applicatifs (JFLA 2018) that was chaired by LRI's Sylvie Boldo and hosted in Banyuls the last week of January. That was a nice opportunity to present a live demo of a multisignature smart-contract entirely written in th... (Read more)

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In this blog post, we explain how ocp-memprof helped us identify a piece of code in Alt-Ergo that needed to be improved. Simply put, a function that merges two maps was performing a lot of unnecessary allocations, negatively impacting the garbage collector's activity. A simple patch allowed us to pr... (Read more)

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A few months ago, a memory leak in the Scanf.fscanf function of OCaml’s standard library has been reported on the OCaml mailing list. The following “minimal” example reproduces this misbehavior: Let us see how to identify the origin of the leak and fix it with our OCaml memory profiler. Instal... (Read more)

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In this blog post, we went on the hunt of memory leaks in Cumulus by using our memory profiler: ocp-memprof. Cumulus is a feed aggregator based on Eliom, a framework for programming web sites and client/server web applications, part of the Ocsigen Project. First, run and get the memory snapshots To ... (Read more)

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Here is a short report on some of our public activities in May and June 2014. Towards OPAM 1.2 After a lot of discussions and work on OPAM itself, we are now getting to a clear workflow for OCaml developpers and packagers: the preliminary document for OPAM 1.2 is available here. The idea is that you... (Read more)

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Here is a short report on some of our activities in April 2014, and a short analysis of OCaml evolution since its first release. OPAM Improvements We're still working on release 1.2. It was decided to include quite a few new features in this release, which delayed it a little bit since we want to be... (Read more)

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OCaml 4.01 with its new feature to disambiguate constructors allows to do a nice trick: a simple and generic syntax extension that allows to define your own syntax without having to write complicated parsetree transformers. We propose an implementation in the form of a ppx rewriter. it does only a s... (Read more)

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Here is a short report of some of our activities in last December and January ! A New Intel Backend for ocamlopt With the support of LexiFi, we started working on a new Intel backend for the ocamlopt native code compiler. Currently, there are four Intel backends in ocamlopt: amd64/emit.mlp, amd64/em... (Read more)

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Here is a short report of our activities in September-October 2013. OCamlPro at OCaml’2013 in Boston We were very happy to participate to OCaml’2013, in Boston. The event was a great success, with a lot of interesting talks and many participants. It was a nice opportunity for us to present some ... (Read more)

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Here is a short report on the different projects we have been working on in August. News from OCamlPro Compiler Optimizations After our reports on better inlining have raised big expectations, we have been working hard on fixing the few remaining bugs. An enhanced alias/constant analysis was added, ... (Read more)

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Once again, here is the summary of our activities for last month. The highlight this month is the release of ocaml-top, an interactive editor for education which works well under Windows and that we hope professors all around the world will use to teach OCaml to their students. We are also continuyi... (Read more)

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It is time to give a brief summary of our recent activities. As usual, our contributions were focused on three main objectives: make the OCaml compiler faster and easier to use; make the OCaml developers more efficient by releasing new development tools and improving editor supports; organize and pa... (Read more)

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This post aims at summarizing the activities of OCamlPro for the past month. As usual, we worked in three main areas: the OCaml toolchain, development tools for OCaml and R&D projects. The toolchain Our multi-runtime implementation of OCaml had gained stability. Luca fixed a lot of low-level bugs in... (Read more)

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Last week, I was bored doing some paperwork, so I decided to hack a little to relieve my mind... Looking for a GUI Framework for OCaml Beginners Some time ago, at OCamlPro, we had discussed the fact that OCaml was lacking more GUI frameworks. Lablgtk is powerful, but I don’t like it (and I expect ... (Read more)

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From the early days of OCamlPro, people have been curious about our plans; they were asking how we worked at OCamlPro and what we were doing exactly. Now that we have started releasing projects more regularly, these questions come again. They are very reasonable questions, and have resolved to be mo... (Read more)

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We have recently worked on modifying the OCaml system to be able to profile OCaml code on Linux amd64 systems, using the processor performance counters now supported by stable kernels. This page presents this work, funded by Jane Street. The patch is provided for OCaml version 4.00.0. If you need it... (Read more)